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1.4 Relationship to Other Protocols

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The RMS: ISV Extension Protocol uses the SOAP messaging protocol, as specified in [SOAP1.1], for formatting requests and responses. It transmits these messages using the HTTP and/or HTTPS protocols. SOAP is considered the wire format used for messaging, and HTTP and HTTPS are the underlying transport protocols. The content files are downloaded using HTTP 1.1, as specified in [RFC2616].The following diagram shows the transport stack used by the RMS: ISV Extension Protocol.

ISV Extension Protocol transport stack

Figure 4: ISV Extension Protocol transport stack